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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
639
Companies
980
Updated
11.10.2026
639 Questions 980 Companies11.10.2026
PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
Google logo
Google
Medium
Software Engineer Locked

Determine All Players with Fixed Rankings

There are N players and directed match results. Work through the function contract, boundary cases, correctness argument, and time and space complexit...

Coding & AlgorithmsGraphs
15
1
265 people solved
Aug 1, 2026
Bloomberg logo
BloombergGoogleAmazonRobinhood

Also asked at Amazon, Robinhood

Medium
Software Engineer

Sum Importance over an Employee's Reachable Subordinates

Problem Each Employee object has a unique id, an integer importance, and a list subordinates of direct report IDs. Given the objects and an employee i...

Coding & AlgorithmsGraphs
1
0
21 people solved
Amazon logo
Amazon
Medium
Software Engineer Locked

Fewest Edge Relocations to Make an Undirected Graph Connected

Given an undirected graph as a node count and an edge list, compute the fewest edge relocations needed to make every node reachable from every other, ...

Coding & AlgorithmsGraphs
8
1
71 people solved
Sep 5, 2026
Amazon logo
Amazon
Medium
Software EngineerIntern

Find a valid dependency order

You are given n tasks labeled from 0 to n - 1 and a list of dependency pairs dependencies, where each pair [a, b] means task b must be completed befor...

Coding & AlgorithmsGraphs
38
0
442 people solved
Feb 15, 2026
PhonePe logo
PhonePeGoogleAmazon

Also asked at Amazon, Media.net, Meta, Microsoft, Bloomberg, Snowflake, Snapchat

Medium
Software Engineer

Maximize Stone Removals Using Shared Rows or Columns

Problem Each pair in stones is a distinct occupied integer coordinate. You may remove a stone only while another remaining stone shares its row or its...

Coding & AlgorithmsGraphs
0
0
10 people solved
Airbnb logo
AirbnbGoogleRippling

Also asked at Rippling, Ramp, Amazon, Waymo, OpenAI

Hard
Software Engineer

Maintain Spreadsheet Cells with Persistent Sum Dependencies

Problem Implement Excel(height,width), with rows 1..height and columns A..width initially zero. set(row,column,val) replaces a cell value and removes ...

Coding & AlgorithmsData Structure DesignGraphs
3
0
24 people solved
Nutanix logo
NutanixAppleDoorDash
Hard
Software Engineer

Best Unique-Node Value on a Timed Return Walk

Problem An undirected graph has vertices numbered from 0 through n - 1, with value values[i] at vertex i. Each edge [u, v, travelTime] takes travelTim...

Coding & AlgorithmsBacktracking & RecursionGraphs
0
0
15 people solved
Composio logo
Composio
Medium
Software Engineer Locked

Generate a Semantic Dependency Graph from Tool Schemas

Design a generator that turns arbitrary tool input and output schemas into an explainable dependency graph. The task covers nested JSON Schema, semant...

Software Engineering FundamentalsGraphsAI Agents
9
0
101 people solved
Aug 9, 2026
Google logo
GoogleUberAmazon
Medium
Software Engineer

First Timestamp When All People Are Connected

Problem People are labeled 0 through n-1. A log [timestamp,x,y] adds a symmetric friendship between x and y, which persists. Acquaintance includes fri...

Coding & AlgorithmsGraphsSorting
0
0
13 people solved
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Collect Pins from Reachable Boards

Traverse a directed graph of boards in deterministic breadth-first order and collect each reachable pin only on its first appearance. Handle cycles an...

Coding & AlgorithmsGraphs
16
0
177 people solved
Jul 2, 2026
Visa logo
Visa
Hard
Software Engineer

Remove One Infected Vertex and Its Edges to Limit Malware

Problem An undirected network is given by adjacency matrix graph, with infected seeds in initial. Infection repeatedly crosses an edge from an infecte...

Coding & AlgorithmsGraphs
1
0
14 people solved
Akuna Capital logo
Akuna CapitalGoogle
Medium
Software Engineer

Choose a Center and up to k Neighbors for Maximum Star Value

Problem In the undirected graph edges, a star contains one center node and any subset of its neighbors using at most k incident edges. Its value is th...

Coding & AlgorithmsGraphsGreedy
1
0
12 people solved
Amazon logo
AmazonAppleGoogle

Also asked at Google, Microsoft, Meta, Bloomberg, Samsung, LinkedIn, TikTok, Lime, Uber

Medium
Software Engineer

Decide Whether an Undirected Graph Can Be Two-Colored

Problem graph is an undirected adjacency list that may be disconnected. Decide whether its vertices can be split into two sets so that every edge join...

Coding & AlgorithmsGraphs
0
0
15 people solved
Google logo
GoogleAndurilMicrosoft

Also asked at Microsoft, Meta, Bloomberg, Amazon, Apple, Uber, Databricks, TikTok, Airbnb, Applied Intuition

Medium
Software Engineer

Fewest Clear Cells From Corner to Corner

Problem In the square binary grid, travel from (0,0) to (n-1,n-1) using horizontal, vertical or diagonal steps to different neighboring cells. Every v...

Coding & AlgorithmsGrids & MatricesGraphs
0
0
11 people solved
Fuse Energy logo
Fuse Energy
Medium
Software Engineer

Implement spreadsheet cells with formulas

Design an in-memory spreadsheet that supports these operations on cells such as A1, B2, and ranges such as A1:B2: - Set(cell, value): assign an intege...

Coding & AlgorithmsData Structure DesignGraphs
100
0
736 people solved
Jan 11, 2026
Infosys logo
InfosysBloombergSquarepoint

Also asked at Squarepoint, Microsoft, Publicis Sapient, Oracle

Medium
Software Engineer

Cross a Three-Lane Road with Few Side Jumps

Problem At point zero on a three-lane road, a frog starts in lane 2. obstacles[i] is zero for no obstacle or names the one blocked lane at point i. Mo...

Coding & AlgorithmsDynamic Programming
1
0
16 people solved
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Lyft, Microsoft, LinkedIn, Apple, Tesla, Uber, Okta, Nutanix

Hard
Software Engineer

Enumerate Every Shortest Dictionary Transformation Chain

Problem Return all shortest word-transformation sequences from beginWord to endWord. Each step changes exactly one letter. Every word after the first ...

Coding & AlgorithmsGraphsBacktracking & Recursion
1
0
21 people solved
Google logo
GoogleAmazonMetaAtlassian

Also asked at Meta, Atlassian

Hard
Software Engineer

Latest Flooding Day with a Land Crossing

Problem A row by col grid is entirely land on day 0. On each subsequent day, the next coordinate in cells becomes water; coordinates are one-based and...

Coding & AlgorithmsGrids & MatricesBinary Search
1
0
11 people solved
Google logo
Google
Medium
Software Engineer Locked

Expand Recursive Key-Value Placeholders in a Template

Expand %KEY% placeholders in a template, recursively resolving placeholders inside mapped values. Use memoized dependency traversal to preserve litera...

Coding & AlgorithmsGraphsParsing & Interpreters
16
0
230 people solved
Aug 4, 2026
Snapchat logo
Snapchat
Medium
Software Engineer

Radar Overlaps and Undetected Crossing of a Rectangular Room

Radars are installed inside a rectangular room bounded by four walls: the left wall x = 0, the right wall x = width, the bottom wall y = 0 and the top...

Coding & AlgorithmsGraphs
7
0
61 people solved
Jul 1, 2026
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